[clang][dataflow] Expose getReferencedDecls for a Stmt. (llvm#89444)

Author: bazuzi

clang/include/clang/Analysis/FlowSensitive/ASTOps.h

@@ -96,6 +96,9 @@ struct ReferencedDecls {
 /// Returns declarations that are declared in or referenced from `FD`.
 ReferencedDecls getReferencedDecls(const FunctionDecl &FD);
 
+/// Returns declarations that are declared in or referenced from `S`.
+ReferencedDecls getReferencedDecls(const Stmt &S);
+
 } // namespace dataflow
 } // namespace clang
 

clang/lib/Analysis/FlowSensitive/ASTOps.cpp

@@ -261,4 +261,10 @@ ReferencedDecls getReferencedDecls(const FunctionDecl &FD) {
   return Result;
 }
 
+ReferencedDecls getReferencedDecls(const Stmt &S) {
+  ReferencedDecls Result;
+  getReferencedDecls(S, Result);
+  return Result;
+}
+
 } // namespace clang::dataflow